package com.itheima.reggie.service.Impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.Setmeal;
import com.itheima.reggie.mapper.CategoryMapper;
import com.itheima.reggie.mapper.DishMapper;
import com.itheima.reggie.mapper.SetmealMapper;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.SetmealService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Slf4j
@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements CategoryService {
   @Autowired
   private DishMapper dishMapper;
   @Autowired
   private SetmealMapper setmealMapper;
    @Override
    public void deleteCategory(Long id) {
        LambdaQueryWrapper<Dish>dishLambdaQueryWrapper=new LambdaQueryWrapper<>();
        dishLambdaQueryWrapper.eq(Dish::getCategoryId,id);
        Integer dishCount= dishMapper.selectCount(dishLambdaQueryWrapper);
        if (dishCount>0){
            throw new CustomException("该分类下关联有套餐信息, 不能直接删除!");
        }

        LambdaQueryWrapper<Setmeal>setmealLambdaQueryWrapper=new LambdaQueryWrapper<>();
        setmealLambdaQueryWrapper.eq(Setmeal::getCategoryId,id);
        Integer setmealCount=setmealMapper.selectCount((setmealLambdaQueryWrapper));
        if (setmealCount>0){
            throw new CustomException("该分类下关联有套餐信息, 不能直接删除!");
        }
        this.removeById(id);
    }

}
